- 27 Mar, 2017 1 commit
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Benjamin Coddington authored
Now that nfs_rename()'s d_move has moved within the RPC task's rpc_call_done callback, rehashing new_dentry will actually rehash the old dentry's name in nfs_rename(). d_move() is going to rehash the new dentry for us anyway, so doing it again here is unnecessary. Reported-by:
Chuck Lever <chuck.lever@oracle.com> Fixes: 920b4530 ("NFS: nfs_rename() handle -ERESTARTSYS dentry left behind") Signed-off-by:
Benjamin Coddington <bcodding@redhat.com> Tested-by:
Anna Schumaker <Anna.Schumaker@Netapp.com>
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- 17 Mar, 2017 7 commits
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Weston Andros Adamson authored
The flexfiles layout should never mark a device unavailable. Move nfs4_mark_deviceid_unavailable out of nfs4_pnfs_ds_connect and call directly from files layout where it's still needed. The flexfiles driver still handles marked devices in error paths, but will now print a rate limited warning. Signed-off-by:
Weston Andros Adamson <dros@primarydata.com> Signed-off-by:
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Weston Andros Adamson authored
The nfs4_pnfs_ds_connect path can call rpc_create which can fail or it can wait on another context to reach the same failure. This checks that the rpc_create succeeded and returns the error to the caller. When an error is returned, both the files and flexfiles layouts will return NULL from _prepare_ds(). The flexfiles layout will also return the layout with the error NFS4ERR_NXIO. Signed-off-by:
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Olga Kornievskaia authored
Currently client doesn't respect max sizes server returns in CREATE_SESSION. nfs4_session_set_rwsize() gets called and server->rsize, server->wsize are 0 so they never get set to the sizes returned by the server. Signed-off-by:
Olga Kornievskaia <kolga@netapp.com> Signed-off-by:
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Olga Kornievskaia authored
Since rpc_task is async, the release function should be called which will free the impl_id, scope, and owner. Trond pointed at 2 more problems: -- use of client pointer after free in the nfs4_exchangeid_release() function -- cl_count mismatch if rpc_run_task() isn't run Fixes: 8d89bd70 ("NFS setup async exchange_id") Signed-off-by:
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Jason Yan authored
Fixes the following sparse warning: fs/nfs/callback.c:235:21: warning: symbol 'nfs4_cb_sv_ops' was not declared. Should it be static? Signed-off-by:
Jason Yan <yanaijie@huawei.com> Signed-off-by:
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Chuck Lever authored
New complaint from kbuild for 4.9.y: net/sunrpc/xprtrdma/verbs.c:489:19: sparse: incompatible types in comparison expression (different type sizes) verbs.c: 489 max_sge = min(ia->ri_device->attrs.max_sge, RPCRDMA_MAX_SEND_SGES); I can't reproduce this running sparse here. Likewise, "make W=1 net/sunrpc/xprtrdma/verbs.o" never indicated any issue. A little poking suggests that because the range of its values is small, gcc can make the actual width of RPCRDMA_MAX_SEND_SGES smaller than the width of an unsigned integer. Fixes: 16f906d6 ("xprtrdma: Reduce required number of send SGEs") Signed-off-by: -
Kinglong Mee authored
The nfs_commit_file for NFSv4.2's COPY operation goes through the commit path for normal WRITE, but without increase nrequests, so, the nrequests decreased in nfs_commit_release_pages is fault. After that, the nrequests will be wrong. [ 5670.299881] ------------[ cut here ]------------ [ 5670.300295] WARNING: CPU: 0 PID: 27656 at fs/nfs/inode.c:127 nfs_clear_inode+0x66/0x90 [nfs] [ 5670.300558] Modules linked in: nfsv4(E) nfs(E) fscache(E) tun bridge stp llc fuse ip_set nfnetlink vmw_vsock_vmci_transport vsock snd_seq_midi snd_seq_midi_event ppdev f2fs coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_ens1371 intel_rapl_perf gameport snd_ac97_codec vmw_balloon ac97_bus snd_seq snd_pcm joydev snd_rawmidi snd_timer snd_seq_device snd soundcore nfit parport_pc parport acpi_cpufreq tpm_tis tpm_tis_core tpm i2c_piix4 vmw_vmci shpchp nfsd auth_rpcgss nfs_acl lockd grace sunrpc xfs libcrc32c vmwgfx drm_kms_helper ttm drm e1000 crc32c_intel mptspi scsi_transport_spi serio_raw mptscsih mptbase ata_generic pata_acpi fjes [last unloaded: fscache] [ 5670.302925] CPU: 0 PID: 27656 Comm: umount.nfs4 Tainted: G W E 4.11.0-rc1+ #519 [ 5670.303292] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015 [ 5670.304094] Call Trace: [ 5670.304510] dump_stack+0x63/0x86 [ 5670.304917] __warn+0xcb/0xf0 [ 5670.305276] warn_slowpath_null+0x1d/0x20 [ 5670.305661] nfs_clear_inode+0x66/0x90 [nfs] [ 5670.306093] nfs4_evict_inode+0x61/0x70 [nfsv4] [ 5670.306480] evict+0xbb/0x1c0 [ 5670.306888] dispose_list+0x4d/0x70 [ 5670.307233] evict_inodes+0x178/0x1a0 [ 5670.307579] generic_shutdown_super+0x44/0xf0 [ 5670.307985] nfs_kill_super+0x21/0x40 [nfs] [ 5670.308325] deactivate_locked_super+0x43/0x70 [ 5670.308698] deactivate_super+0x5a/0x60 [ 5670.309036] cleanup_mnt+0x3f/0x90 [ 5670.309407] __cleanup_mnt+0x12/0x20 [ 5670.309837] task_work_run+0x80/0xa0 [ 5670.310162] exit_to_usermode_loop+0x89/0x90 [ 5670.310497] syscall_return_slowpath+0xaa/0xb0 [ 5670.310875] entry_SYSCALL_64_fastpath+0xa7/0xa9 [ 5670.311197] RIP: 0033:0x7f1bb3617fe7 [ 5670.311545] RSP: 002b:00007ffecbabb828 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 5670.311906] RAX: 0000000000000000 RBX: 0000000001dca1f0 RCX: 00007f1bb3617fe7 [ 5670.312239] RDX: 000000000000000c RSI: 0000000000000001 RDI: 0000000001dc83c0 [ 5670.312653] RBP: 0000000001dc83c0 R08: 0000000000000001 R09: 0000000000000000 [ 5670.312998] R10: 0000000000000755 R11: 0000000000000206 R12: 00007ffecbabc66a [ 5670.313335] R13: 0000000001dc83a0 R14: 0000000000000000 R15: 0000000000000000 [ 5670.313758] ---[ end trace bf4bfe7764e4eb40 ]--- Cc: linux-kernel@vger.kernel.org Fixes: 67911c8f ("NFS: Add nfs_commit_file()") Signed-off-by:
Kinglong Mee <kinglongmee@gmail.com> Cc: stable@vger.kernel.org # 4.7+ Signed-off-by:
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- 13 Mar, 2017 2 commits
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Kinglong Mee authored
Because nfs4_opendata_access() has close the state when access is denied, so the state isn't leak. Rather than revert the commit a974deee, I'd like clean the strange state close. [ 1615.094218] ------------[ cut here ]------------ [ 1615.094607] WARNING: CPU: 0 PID: 23702 at lib/list_debug.c:31 __list_add_valid+0x8e/0xa0 [ 1615.094913] list_add double add: new=ffff9d7901d9f608, prev=ffff9d7901d9f608, next=ffff9d7901ee8dd0. [ 1615.095458] Modules linked in: nfsv4(E) nfs(E) nfsd(E) tun bridge stp llc fuse ip_set nfnetlink vmw_vsock_vmci_transport vsock f2fs snd_seq_midi snd_seq_midi_event fscrypto coretemp ppdev crct10dif_pclmul crc32_pclmul ghash_clmulni_intel intel_rapl_perf vmw_balloon snd_ens1371 joydev gameport snd_ac97_codec ac97_bus snd_seq snd_pcm snd_rawmidi snd_timer snd_seq_device snd soundcore nfit parport_pc parport acpi_cpufreq tpm_tis tpm_tis_core tpm i2c_piix4 vmw_vmci shpchp auth_rpcgss nfs_acl lockd(E) grace sunrpc(E) xfs libcrc32c vmwgfx drm_kms_helper ttm drm crc32c_intel mptspi e1000 serio_raw scsi_transport_spi mptscsih mptbase ata_generic pata_acpi fjes [last unloaded: nfs] [ 1615.097663] CPU: 0 PID: 23702 Comm: fstest Tainted: G W E 4.11.0-rc1+ #517 [ 1615.098015] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015 [ 1615.098807] Call Trace: [ 1615.099183] dump_stack+0x63/0x86 [ 1615.099578] __warn+0xcb/0xf0 [ 1615.099967] warn_slowpath_fmt+0x5f/0x80 [ 1615.100370] __list_add_valid+0x8e/0xa0 [ 1615.100760] nfs4_put_state_owner+0x75/0xc0 [nfsv4] [ 1615.101136] __nfs4_close+0x109/0x140 [nfsv4] [ 1615.101524] nfs4_close_state+0x15/0x20 [nfsv4] [ 1615.101949] nfs4_close_context+0x21/0x30 [nfsv4] [ 1615.102691] __put_nfs_open_context+0xb8/0x110 [nfs] [ 1615.103155] put_nfs_open_context+0x10/0x20 [nfs] [ 1615.103586] nfs4_file_open+0x13b/0x260 [nfsv4] [ 1615.103978] do_dentry_open+0x20a/0x2f0 [ 1615.104369] ? nfs4_copy_file_range+0x30/0x30 [nfsv4] [ 1615.104739] vfs_open+0x4c/0x70 [ 1615.105106] ? may_open+0x5a/0x100 [ 1615.105469] path_openat+0x623/0x1420 [ 1615.105823] do_filp_open+0x91/0x100 [ 1615.106174] ? __alloc_fd+0x3f/0x170 [ 1615.106568] do_sys_open+0x130/0x220 [ 1615.106920] ? __put_cred+0x3d/0x50 [ 1615.107256] SyS_open+0x1e/0x20 [ 1615.107588] entry_SYSCALL_64_fastpath+0x1a/0xa9 [ 1615.107922] RIP: 0033:0x7fab599069b0 [ 1615.108247] RSP: 002b:00007ffcf0600d78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1615.108575] RAX: ffffffffffffffda RBX: 00007fab59bcfae0 RCX: 00007fab599069b0 [ 1615.108896] RDX: 0000000000000200 RSI: 0000000000000200 RDI: 00007ffcf060255e [ 1615.109211] RBP: 0000000000040010 R08: 0000000000000000 R09: 0000000000000016 [ 1615.109515] R10: 00000000000006a1 R11: 0000000000000246 R12: 0000000000041000 [ 1615.109806] R13: 0000000000040010 R14: 0000000000001000 R15: 0000000000002710 [ 1615.110152] ---[ end trace 96ed63b1306bf2f3 ]--- Fixes: a974deee ("NFSv4: Fix memory and state leak in...") Signed-off-by:
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Kinglong Mee authored
This typo cause a memory leak, and a bad client's group id. unreferenced object 0xffff96d8073998d0 (size 8): comm "kworker/0:3", pid 34224, jiffies 4295361338 (age 761.752s) hex dump (first 8 bytes): 30 00 39 07 d8 96 ff ff 0.9..... backtrace: [<ffffffffb883212a>] kmemleak_alloc+0x4a/0xa0 [<ffffffffb8237bc0>] __kmalloc+0x140/0x220 [<ffffffffc05c921c>] xdr_stream_decode_string_dup+0x7c/0x110 [sunrpc] [<ffffffffc08edcf0>] decode_getfattr_attrs+0x940/0x1630 [nfsv4] [<ffffffffc08eea7b>] decode_getfattr_generic.constprop.108+0x9b/0x100 [nfsv4] [<ffffffffc08eebaf>] nfs4_xdr_dec_open+0xcf/0x100 [nfsv4] [<ffffffffc05bf9c7>] rpcauth_unwrap_resp+0xa7/0xe0 [sunrpc] [<ffffffffc05afc70>] call_decode+0x1e0/0x810 [sunrpc] [<ffffffffc05bc64d>] __rpc_execute+0x8d/0x420 [sunrpc] [<ffffffffc05bc9f2>] rpc_async_schedule+0x12/0x20 [sunrpc] [<ffffffffb80bb077>] process_one_work+0x197/0x430 [<ffffffffb80bb35e>] worker_thread+0x4e/0x4a0 [<ffffffffb80c1d41>] kthread+0x101/0x140 [<ffffffffb8839a5c>] ret_from_fork+0x2c/0x40 [<ffffffffffffffff>] 0xffffffffffffffff Fixes: 686a816a ("NFSv4: Clean up owner/group attribute decode") Signed-off-by:
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- 23 Feb, 2017 2 commits
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Weston Andros Adamson authored
We're not taking into account that the space needed for the (variable length) attr bitmap, with the result that we'd sometimes get a spurious ERANGE when the ACL data got close to the end of a page. Just add in an extra page to make sure. Signed-off-by:
J. Bruce Fields <bfields@redhat.com> Signed-off-by:
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J. Bruce Fields authored
Bitmap and attrlen follow immediately after the op reply header. This was an oversight from commit bf118a34. Consequences of this are just minor efficiency (extra calls to xdr_shrink_bufhead). Fixes: bf118a34 "NFSv4: include bitmap in nfsv4 get acl data" Reviewed-by:
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- 22 Feb, 2017 3 commits
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Trond Myklebust authored
This reverts commit 2cf10cdd. The patch has been seen to cause excessive looping. Reported-by:
Olga Kornievskaia <aglo@umich.edu> Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com> Cc: stable@vger.kernel.org # 4.10+ Signed-off-by:
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Trond Myklebust authored
Copy offload code needs to be hooked into the code for handling NFS4ERR_BAD_STATEID by ensuring that we set the "stateid" field in struct nfs4_exception. Reported-by:
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Trond Myklebust authored
If we see that our pNFS READ/WRITE/COMMIT operation failed, but we also see that our layout segment is no longer valid, then we need to get a new layout segment before retrying. Fixes: 90816d1d ("NFSv4.1/flexfiles: Don't mark the entire deviceid...") Cc: stable@vger.kernel.org # v4.2+ Signed-off-by:
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- 21 Feb, 2017 9 commits
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Trond Myklebust authored
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Trond Myklebust authored
Create a helper function that decodes a xdr string object, allocates a memory buffer and then store it as a NUL terminated string. Signed-off-by:
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Trond Myklebust authored
We shouldn't need to force callers to carry an unused argument. Signed-off-by:
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Trond Myklebust authored
Account for the "space_limit" field in struct open_write_delegation4. Fixes: 2cebf828 ("NFSv4: Fix the underestimate of NFSv4 open request size") Signed-off-by:
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Trond Myklebust authored
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Trond Myklebust authored
Also ensure that we always check that the size of the decoded object matches the expectation that it must be smaller than NFS4_OPAQUE_LIMIT. This should be true for all the current users of decode_opaque_inline(), including decode_ace(), decode_pathname(), decode_attr_fs_locations() and decode_exchange_id(). Note that this allows us to get rid of a number of existing checks in decode_exchange_id(), Signed-off-by:
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Trond Myklebust authored
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Trond Myklebust authored
Add some generic helpers for encoding/decoding opaque structures and basic u32/u64. Signed-off-by:
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Dan Carpenter authored
kstrtouint() can return a couple different error codes so the check for "ret == -EINVAL" is wrong and static analysis tools correctly complain that we can use "num" without initializing it. It's not super harmful because we check the bounds. But it's also easy enough to fix. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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- 13 Feb, 2017 1 commit
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Trond Myklebust authored
It is not sufficient to just check that the lock pids match when granting a callback, we also need to ensure that we're granting the callback on the right file. Reported-by:
Pankaj Singh <psingh.ait@gmail.com> Fixes: 1da177e4 ("Linux-2.6.12-rc2") Cc: stable@vger.kernel.org Signed-off-by:
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- 10 Feb, 2017 9 commits
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Chuck Lever authored
The transport lock is needed to protect the xprt_adjust_cwnd() call in xs_udp_timer, but it is not necessary for accessing the rq_reply_bytes_recvd or tk_status fields. It is correct to sublimate the lock into UDP's xs_udp_timer method, where it is required. The ->timer method has to take the transport lock if needed, but it can now sleep safely, or even call back into the RPC scheduler. This is more a clean-up than a fix, but the "issue" was introduced by my transport switch patches back in 2005. Fixes: 46c0ee8b ("RPC: separate xprt_timer implementations") Signed-off-by:
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Chuck Lever authored
Clean up some duplicate code. Signed-off-by:
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Chuck Lever authored
A server rejects a connection attempt with STALE_CONNECTION when a client attempts to connect to a working remote service, but uses a QPN and GUID that corresponds to an old connection that was abandoned. This might occur after a client crashes and restarts. Fix rpcrdma_conn_upcall() to distinguish between a normal rejection and rejection of stale connection parameters. As an additional clean-up, remove the code that retries the connection attempt with different ORD/IRD values. Code audit of other ULP initiators shows no similar special case handling of initiator_depth or responder_resources. Signed-off-by:
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Chuck Lever authored
Sriharsha (sriharsha.basavapatna@broadcom.com) reports an occasional double DMA unmap of an FRWR MR when a connection is lost. I see one way this can happen. When a request requires more than one segment or chunk, rpcrdma_marshal_req loops, invoking ->frwr_op_map for each segment (MR) in each chunk. Each call posts a FASTREG Work Request to register one MR. Now suppose that the transport connection is lost part-way through marshaling this request. As part of recovering and resetting that req, rpcrdma_marshal_req invokes ->frwr_op_unmap_safe, which hands all the req's registered FRWRs to the MR recovery thread. But note: FRWR registration is asynchronous. So it's possible that some of these "already registered" FRWRs are fully registered, and some are still waiting for their FASTREG WR to complete. When the connection is lost, the "already registered" frmrs are marked FRMR_IS_VALID, and the "still waiting" WRs flush. Then frwr_wc_fastreg marks these frmrs FRMR_FLUSHED_FR. But thanks to ->frwr_op_unmap_safe, the MR recovery thread is doing an unreg / alloc_mr, a DMA unmap, and marking each of these frwrs FRMR_IS_INVALID, at the same time frwr_wc_fastreg might be running. - If the recovery thread runs last, then the frmr is marked FRMR_IS_INVALID, and life continues. - If frwr_wc_fastreg runs last, the frmr is marked FRMR_FLUSHED_FR, but the recovery thread has already DMA unmapped that MR. When ->frwr_op_map later re-uses this frmr, it sees it is not marked FRMR_IS_INVALID, and tries to recover it before using it, resulting in a second DMA unmap of the same MR. The fix is to guarantee in-flight FASTREG WRs have flushed before MR recovery runs on those FRWRs. Thus we depend on ro_unmap_safe (called from xprt_rdma_send_request on retransmit, or from xprt_rdma_free) to clean up old registrations as needed. Reported-by:
Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Signed-off-by:
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Chuck Lever authored
We no longer need to accommodate an xdr_buf whose pages start at an offset and cross extra page boundaries. If there are more partial or whole pages to send than there are available SGEs, the marshaling logic is now smart enough to use a Read chunk instead of failing. Signed-off-by:
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Chuck Lever authored
The MAX_SEND_SGES check introduced in commit 655fec69 ("xprtrdma: Use gathered Send for large inline messages") fails for devices that have a small max_sge. Instead of checking for a large fixed maximum number of SGEs, check for a minimum small number. RPC-over-RDMA will switch to using a Read chunk if an xdr_buf has more pages than can fit in the device's max_sge limit. This is considerably better than failing all together to mount the server. This fix supports devices that have as few as three send SGEs available. Reported-by:
Selvin Xavier <selvin.xavier@broadcom.com> Reported-by:
Devesh Sharma <devesh.sharma@broadcom.com> Reported-by:
Honggang Li <honli@redhat.com> Reported-by:
Ram Amrani <Ram.Amrani@cavium.com> Fixes: 655fec69 ("xprtrdma: Use gathered Send for large ...") Cc: stable@vger.kernel.org # v4.9+ Tested-by:
Steve Wise <swise@opengridcomputing.com> Reviewed-by:
Parav Pandit <parav@mellanox.com> Signed-off-by:
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Chuck Lever authored
Commit d5440e27 ("xprtrdma: Enable pad optimization") made the Linux client omit XDR round-up padding in normal Read and Write chunks so that the client doesn't have to register and invalidate 3-byte memory regions that contain no real data. Unfortunately, my cheery 2014 assessment that this optimization "is supported now by both Linux and Solaris servers" was premature. We've found bugs in Solaris in this area since commit d5440e27 ("xprtrdma: Enable pad optimization") was merged (SYMLINK is the main offender). So for maximum interoperability, I'm disabling this optimization again. If a CM private message is exchanged when connecting, the client recognizes that the server is Linux, and enables the optimization for that connection. Until now the Solaris server bugs did not impact common operations, and were thus largely benign. Soon, less capable devices on Linux NFS/RDMA clients will make use of Read chunks more often, and these Solaris bugs will prevent interoperation in more cases. Fixes: 677eb17e ("xprtrdma: Fix XDR tail buffer marshalling") Cc: stable@vger.kernel.org # v4.9+ Signed-off-by:
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Chuck Lever authored
Pad optimization is changed by echoing into /proc/sys/sunrpc/rdma_pad_optimize. This is a global setting, affecting all RPC-over-RDMA connections to all servers. The marshaling code picks up that value and uses it for decisions about how to construct each RPC-over-RDMA frame. Having it change suddenly in mid-operation can result in unexpected failures. And some servers a client mounts might need chunk round-up, while others don't. So instead, copy the pad_optimize setting into each connection's rpcrdma_ia when the transport is created, and use the copy, which can't change during the life of the connection, instead. This also removes a hack: rpcrdma_convert_iovs was using the remote-invalidation-expected flag to predict when it could leave out Write chunk padding. This is because the Linux server handles implicit XDR padding on Write chunks correctly, and only Linux servers can set the connection's remote-invalidation-expected flag. It's more sensible to use the pad optimization setting instead. Fixes: 677eb17e ("xprtrdma: Fix XDR tail buffer marshalling") Cc: stable@vger.kernel.org # v4.9+ Signed-off-by:
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Chuck Lever authored
When pad optimization is disabled, rpcrdma_convert_iovs still does not add explicit XDR round-up padding to a Read chunk. Commit 677eb17e ("xprtrdma: Fix XDR tail buffer marshalling") incorrectly short-circuited the test for whether round-up padding is needed that appears later in rpcrdma_convert_iovs. However, if this is indeed a regular Read chunk (and not a Position-Zero Read chunk), the tail iovec _always_ contains the chunk's padding, and never anything else. So, it's easy to just skip the tail when padding optimization is enabled, and add the tail in a subsequent Read chunk segment, if disabled. Fixes: 677eb17e ("xprtrdma: Fix XDR tail buffer marshalling") Cc: stable@vger.kernel.org # v4.9+ Signed-off-by:
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- 09 Feb, 2017 4 commits
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Trond Myklebust authored
Set the timeout for TCP connections to be 1 lease period to ensure that we don't lose our lease due to a faulty TCP connection. Signed-off-by:
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Trond Myklebust authored
When the NFSv4 server tells us the lease period, we usually want to adjust down the timeout parameters on the TCP connection to ensure that we don't miss lease renewals due to a faulty connection. Signed-off-by:
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Trond Myklebust authored
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Trond Myklebust authored
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- 08 Feb, 2017 2 commits
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Trond Myklebust authored
If we exit because the file access check failed, we currently leak the struct nfs4_state. We need to attach it to the open context before returning. Fixes: 3efb9722 ("NFSv4: Refactor _nfs4_open_and_get_state..") Cc: stable@vger.kernel.org # 3.10+ Signed-off-by:
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Kinglong Mee authored
Signed-off-by:
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